Ballpoint pen



FIG. 1 is a front elevational view of the ballpoint pen showing our design;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a bottom view thereof;

FIG. 6 is a front elevational view of the ballpoint pen with the cap removed and affixed to the opposite end; and,

FIG. 7 is a perspective view of FIG. 1.

The stippling shown in the drawings represents a texture on the surface of the ballpoint pen. 

We claim the ornamental design for the ballpoint pen, as shown and described. 